Para sa poweramp na trial version. After 15 days di na siya mag work para marenew lang yung app :
To renew it for another 15 days just uninstall the app.
then go to custom recovery of your phone clear cache then restart device install poweramp
boom
! you have another 15 days. just renew the process if the 15 days trial expires pa feed back if gumana sa inyo. Thanks